导致血磷增高和血钙减低的是（）.
A.多发性骨髓病
B.急性心肌梗死
C.甲状旁腺功能减退症
D.VitD抵抗性佝偻病
E.肾小管性酸中毒
参考答案：C
— Would you please tell us something about the Group of Eight?
— Well, the G8 is an international organization ______ the richest countries of the world.
A．making up of
B．consisted of
C．consisting of
D．made of
明沟排水的明沟坡度不小于（）。
A、0.4%
B、1.5%
C、2.4%
D、4%
